20431550012300 has 72 divisors (see below), whose sum is σ = 51118653467616. Its totient is φ = 6943110773760.

The previous prime is 20431550012297. The next prime is 20431550012317. The reversal of 20431550012300 is 321005513402.

It is a happy number.

It is a super-2 number, since 2×20431550012300² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20431550012300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129071027 + ... + 129229226.

Almost surely, 2^{20431550012300} is an apocalyptic number.

20431550012300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20431550012300 is an abundant number, since it is smaller than the sum of its proper divisors (30687103455316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20431550012300 is a wasteful number, since it uses less digits than its factorization.

20431550012300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258300387 (or 258300380 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20431550012300 its reverse (321005513402), we get a palindrome (20752555525702).

The spelling of 20431550012300 in words is "twenty trillion, four hundred thirty-one billion, five hundred fifty million, twelve thousand, three hundred".